• 文献标题:   Electronic structure of disordered graphene with Green's function approach
  • 文献类型:   Article
  • 作  者:   SMOTLACHA J, PINCAK R, PUDLAK M
  • 作者关键词:   graphene, carbon nanostructure, disclination, green function, continued fraction
  • 出版物名称:   PHYSICS LETTERS A
  • ISSN:   0375-9601
  • 通讯作者地址:   Slovak Acad Sci
  • 被引频次:   2
  • DOI:   10.1016/j.physleta.2012.09.009
  • 出版年:   2012

▎ 摘  要

The Green functions play a big role in the calculation of the local density of states of the carbon nanostructures. We investigate their nature for the variously oriented and disclinated graphene-like surface. Next, we investigate the case of a small perturbation generated by two heptagonal defects and from the character of the local density of states in the border sites of these defects we derive their minimal and maximal distances on the perturbed cylindrical surface. For this purpose, we transform the given surface into a chain using the Haydock recursion method. We will suppose only the nearest-neighbor interactions between the atom orbitals, in other words, the calculations suppose the short-range potential. (C) 2012 Elsevier B.V. All rights reserved.